Learning phph. basic question

Hi.

I’m a newbie in every sense of the word regarding php.
I’m following tutorials in a book and have encountered an early problem.

In a “test” script, I opened this in my browser:

<html>
<head>
<title>First PHP Code</title>
</head>
<body>
<?php
echo “I am a lumberjack.”;
?>
</body>
</html>

The problem is I can’t see the statement “I am a lumberjack”
What’s wrong here???